Sphenotrochus Milne-Edwards & Haime, 1848

Diagnosis.

Corallum cuneiform with a rounded base; transverse division lacking. Theca imperforate; costae smooth, corresponding to septa. Costae sometimes degenerate into discontinuous fragments on basal or all of thecal face. Three or four cycles of septa. Pali absent; columella lamellar.

Type species.

Turbinolia crispa Lamarck, 1816, by subsequent designation (Milne-Edwards and Haime 1850b).